/**
* Move a category before the a given element of its hierarchy level
*
* @param object $the_term
* @param int $next_id the id of the next slibling element in save hierachy level
* @param int $index
* @param int $terms
* @return int
*/
function fflcommerce_order_categories($the_term, $next_id, $index = 0, $terms = null)
{
if (!$terms) {
$terms = get_terms('product_cat', 'menu_order=ASC&hide_empty=0&parent=0');
}
if (empty($terms)) {
return $index;
}
$id = $the_term->term_id;
$term_in_level = false;
// flag: is our term to order in this level of terms
foreach ($terms as $term) {
if ($term->term_id == $id) {
// our term to order, we skip
$term_in_level = true;
continue;
// our term to order, we skip
}
// the nextid of our term to order, lets move our term here
if (null !== $next_id && $term->term_id == $next_id) {
$index++;
$index = fflcommerce_set_category_order($id, $index, true);
}
// set order
$index++;
$index = fflcommerece_set_category_order($term->term_id, $index);
// if that term has children we walk through them
$children = get_terms('product_cat', "parent={$term->term_id}&menu_order=ASC&hide_empty=0");
if (!empty($children)) {
$index = fflcommerce_order_categories($the_term, $next_id, $index, $children);
}
}
// no nextid meaning our term is in last position
if ($term_in_level && null === $next_id) {
$index = fflcommerce_set_category_order($id, $index + 1, true);
}
return $index;
}
/**
* Ajax request handling for categories ordering
*/
function fflcommerce_categories_ordering()
{
$id = (int) $_POST['id'];
$next_id = isset($_POST['nextid']) && (int) $_POST['nextid'] ? (int) $_POST['nextid'] : null;
if (!$id || !($term = get_term_by('id', $id, 'product_cat'))) {
die(0);
}
fflcommerce_order_categories($term, $next_id);
$children = get_terms('product_cat', "child_of={$id}&menu_order=ASC&hide_empty=0");
if ($term && sizeof($children)) {
echo 'children';
die;
}
}
